I have a box with F25 with the exact issue noted here by Linus: https://lkml.org/lkml/2016/10/5/299
I have a laptop I just upgraded to F26, which also get it's nice clean graphical boot interrupted by this messages:
kernel: Error parsing PCC subspaces from PCCT
Both installs also show a load of repeating scrolling text that runs by really fast after the graphical shutdown.
Is there any way to hide these messages? as there are no apparent negative effects on my systems as a result. To a normal non developer end user things like this make the operating system look broken.
Surley it would be better to not have these interrupt the boot, while retaining the option to escape the graphical boot. So if something doesn't work you can still check things at boot?